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Finding the Fourth Proportional to 16,871.70, 25,287.30 and 7,005.90

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Solution

The fourth proportional to 16,871.70, 25,287.30 and 7,005.90 is: 10,500.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,871.70 : 25,287.30 = 7,005.90 : x
  2. Step 2: Convert to fraction form
    16,871.70/25,287.30 = 7,005.90/x
  3. Step 3: Cross multiply
    16,871.70x = 25,287.30 × 7,005.90
  4. Step 4: Simplify right side
    16,871.70x = 177,160,295.07
  5. Step 5: Solve for x
    x = 177,160,295.07/16,871.70
  6. Step 6: Final answer
    x = 10,500.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.